Cotton gin roll



July 11, 1961 E. R. CASTLE COTTON Gin ROLL Filed Sept. 25, 1959 IN V EN TOR.

E DW/A/ R. CA5 TL E A f larney.

2,991,512 COTTON GIN ROLL Edwin ZRQCastle, Glendale, Ariz., assignor to The Garrett Corporation, Los Angeles, Calif., a corporation of California Filed Sept. 25, 1959, Ser. No. 842,461 8 Claims. (Cl. 19- 54) This invention relates generally to machines for separating seeds and foreign objects from fibrous material,

and is more particularly directed to an improved roll for cleaning and ginning long staple cotton.

Heretofore, some cotton gin rolls have been formed with wooden cores covered with material for producing a rough fiber-pulling surface. Such prior rolls were subject to high wear, requiring frequent refinishing or rebuilding, and with the use of steam the wooden cores also warped and changed shape. This frequent refinishing or rebuilding resulted in expensive interruptions of the ginning machines and idleness of the laborers. It is an object of this invention to provide a cotton gin roll construction which will be highly resistant to uneven wear, will be unaffected by the use of steam, and will give longv periods of uninterrupted, trouble-free service.

Another object of this invention is to provide a cotton gin roll composed of readily fabricated materials and having a construction which will facilitate the original manufacture of the roll as well as the rebuilding thereof when the occasion arises.

Still another object of the invention is to provide a cotton gin roll having a metallic core and a covering formed of a plurality of disks die-cut from sheet material having layers of fabric impregnated with rubber and vulcanized into an integral piece, the disks and core being secured together in roll-forming order.

Another object of the invention rests in providing a cotton gin roll having a metallic core of polygonal cross section on which is pressed a plurality of disks to formthe roll, the disks being stamped from. vulcanized sheet rubber having plies of fabric which will form a multiplicity of bristle-like projections on the surface of the roll, the particular cross-sectional shape of the core and the corresponding center holes in the disks causing the positive rotation and pulling action of the roll.

' A further object of the invention rests in forming the disks referred to in the preceding paragraph from white rubber in which square-woven white duck is bonded and vulcanized so that the cotton being ginned will be maintained in a clean white condition. This condition is further maintained by cadmium-plating the metallic core and other parts to prevent rust which might otherwise be caused by the use of steam.

A still' further object of the invention is to provide the cotton gin roll referred to in the preceding paragraphs with end pieces for the metallic core which will serve to center a shaft in the roll, novel means being provided also to secure the roll to the shaft so that all parts will rotate as a unit.

'(Jtherobjects and advantages of the present invention will be made apparent by the following description of a cotton gin roll formed in accordance therewith and illustrated in detail in the accompanying drawing.

In the drawing:

FIG. 1 is a perspective view of a cotton gin roll embodying the principles of the present invention, a quarter section of the roll being removed to show details of internal construction;

FIG. 2 is an axial sectional View taken through one end of the cotton gin roll shown in FIG. 1;

FIG. 3 is a vertical sectional view taken through the roll on the plane indicated by the line llI-lllI of FIG. 2

' smooth, flat ends.

FIG; 4 is a perspective view of one of the disks used in the roll. I

Referring more particularly to the drawing, the numeral 20 designates generally the cotton gin roll form-V ing the subject. matter of the present invention. This" roll includes a tubular body 21 which is formed of suitable material, preferably steel or other metal, which may be cadmium-plated to prevent the formation of rust. The body 21 is of rectangular or square cross-sectional form, the purpose of which will be apparent from the following description.

The body receives a plurality of disks 22 which have central openings 23 conforming to the external shape of the body 21. The disks 22 are formed from sheet material having a plurality of plies of square-woven white cotton duck impregnated with a white rubber and Vulcan:

ized to form the integral sheet. In the formation of one prototype of the roll the material employed was approximately thick and contained 13 plies of the cotton duck. White duck and white rubber are utilized to keep the cotton or other fibers cleaned in the gin from being soiled. The disks are stacked together and pressed on the body 21 to form a roll. They are held in tightly stacked relation by end pieces 24, these pieces having a rectangular or square cross-sectional portion 25 inserted in the ends of the body 21 and closely fitted thereto. The end pieces also have external flanges 26 of circular configuration, these flanges engaging the ends of the body 21. The end disks are recessed,

as indicated by the numeral 27, to permit the flanges 26 to be embedded in the roll and provide the latter with These flat ends prevent cotton seed or other foreign material from falling through the gin at the ends of the roll into the cleaned cotton. v

7 To retain the end pieces in position and provide for the rotation of the roll, the end pieces are formedas shown in FIG. 2 with tapered internal bores 29, thelarger ends of which are disposed at the outer ends of the roll. These bores receive sleeve members 28 which have tapered outer surfaces, the sleeves being so arranged that the tapered surfaces thereof complement the tapered bores in the end pieces. bores formed therein and are split, as at 30, so that the sleeves may be contracted and expanded to facilitate the assembly of the roll and to secure the parts in operative relationship.

The sleeves are also provided with keyways for reception of keys 31 employed to nonrotatably secure the sleeves to a shaft 32 disposed in the bores of the sleeves. The shaft is also provided with keyways for the reception of the keys 31.

As shown in FIG. 2, the assembly, including an end piece 24 and complemental sleeve 28, is provided with one or more tapped holes 33 at the adjoining edges of the tapered openings in the pieces. These tapped holes receive setscrews 34 which tend, when threaded into the openings, to impart relative movement to the end pieces and sleeves, such movement serving to contract the sleeves into firm engagement with the shaft 32. The contraction of the sleeves also serves to secure the keys 31 in the keyways. It will be noted that the shaft, the end pieces, the sleeves, and the keys are all cadmium-plated to prevent rusting thereof due to the use of steam in the operation of the gin.

As previously mentioned, the disks include a multiplicity of plies of cotton duck which when the disks are die-cut provide a plurality of short bristle-like ends at the peripheries of the disks. These bristle-like ends engage the filaments of the cotton and pull them through the space between the exterior of the roll and a knife, the latter serving to separate cotton seed and other foreign matter from the filaments. By using the vulcanized rub- Patented July 11, 1961;

The sleeves 28 have straight While only a single form of roll has been illustrated;

it should be obvious that many minor changes in the construction and relation of parts may be made without departing from the spirit and scope of the invention.

. I claim:

1. A cotton gin roll comprising: a tubular body of polygonal cross section; a plurality of disk members pressed on said tubular body, said disk members being formed from square-woven white cotton duck bonded together with white rubber and vulcanized; end pieces shaped to fit into said tubular body, said end pieces having tapered internal bores and external flanges recessed in the end disks; split oppositely tapered sleeves disposed in the tapered bores in said end pieces; shaft means extending through said sleeve; key means disposed in said sleeves and shaft means; and means for imparting relative movement to said sleeves and end pieces'to lock the roll in assembled relationship.

2. A cotton gin roll comprising: a tubular body of rectangular cross section; a plurality of disk members with central openings conforming to the cross-sectional configuration of said body and pressed thereon to form a roll, said disk members being formed from square-Woven white cotton duck bonded together with white rubber and vulcanized; end pieces of rectangular cross section fitted into the ends of said body, said end pieces having tapered internal bores and external flanges recessed in the end disks; split oppositely tapered sleeves disposed in the tapered bores in said end pieces; shaft means extending through said sleeves; key means disposed in said sleeves and shaft means; and threaded means tending to impart relative movement to said sleeves and end pieces to lock the roll in assembled relationship.

3. A cotton gin roll comprising: a tubular body of square cross section; a plurality of disk members with square central openings pressed on said body to form a roll, said disk members being formed from square-woven white cotton duck bonded together with white rubber and vulcanized; end pieces of square cross section fitted into the ends of said body, said end pieces having tapered internal bores and external flanges recessed in the end disks; split oppositely tapered sleeves disposed in the tapered bores in said end pieces; shaft means extending through said sleeves; and means tending to impart relative movement to said sleeves and end pieces to secure said roll for rotation with said shaft.

4. A cotton gin roll comprising: a tubular body of square cross section; a plurality of disk members with square central openings pressed on said body to form a roll, said disk members being formed from sheet material consisting of fabric impregnated with rubber and vulcanized; end pieces of square cross section fitted into the ends of said body, said end pieces having tapered internal bores and circular external flanges recessed in the end disks; split oppositely tapered sleeves disposed in the tapered bores in said end pieces; shaft means extending through said sleeves; and means tending to impart relative movement to said sleeves and end pieces to secure said roll for rotation with said shaft.

5. A cotton gin roll comprising: a tubular body of polygonal cross section; a plurality of disk members with polygonal central openings pressed on said body to form a roll, said disk members being formed from sheet material consisting of square-woven white duck impregnated with white rubber and vulcanized; end pieces conforming in cross section to the internal cross section of said body and fitted into the ends thereof, said end pieces having circular external flanges recessed in the end disks; shaft means extending through said end pieces; and means between said end pieces and shaft means for securing said roll to said shaft for rotary movement therewith.

6. A cotton gin roll comprising: a tubular body of square cross section; a plurality of disk members with square central openings pressed on said body to form a roll, said disk members being formed from sheet material consisting of fabric impregnated with rubber and vulcanized; end pieces of square cross section fitted into the ends of said body, said end pieces having circular external flanges recessed in the end disks; shaft means extending through said end pieces; and means between said end pieces and shaft means for securing said roll to said shaft for rotary movement therewith.

7. A cotton gin roll comprising: a tubular body of square cross section; a plurality of disk members with square central openings pressed on said body to form a roll, said disk members being formed from sheet material consisting of fabric impregnated with rubber and vulcanized; end pieces conforming in cross section to the internal cross section of said body and fitted into the ends thereof, said end pieces having circular external flanges engaging the end disks; shaft means extending through said end pieces; and means between said end pieces and shaft means for securing said roll to said shaft for rotary movement therewith.

8. A cotton gin roll comprising: a tubular body of rectangular cross section; a plurality of disk members with central openings conforming to the cross-sectional configuration of said body and pressed thereon to form a roll, said disk members being formed from square woven cotton duck bonded together with white rubber and vulcanized; end pieces of rectangular cross section fitted into the ends of said body, said end pieces having external flanges recessed into the end disks and internal tapered bores, the apex of each bore being directed inward relative to said roll; split-oppositely tapered sleeves disposed in the tapered bores formed in said end pieces; shaft means extending through said sleeves; key means disposed in said sleeves and shaft means; and threaded mean tending to impart relative movement to said sleeves and end pieces to lock the roll in assembled relationship.

References Cited in the file of this patent UNITED STATES PATENTS 130,438 Osgood Aug. 13, 1872 FOREIGN PATENTS 13,786 Great Britain of 1890 

